Cutting device.



n F. N. PunnuE.

CUTTING DEVICE.

APPLICATION FILED Nov.2. 1 915.

:IIII-llll 1,200,981. Patented 1001;. 10,1916.

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CUTTING DEVICE.

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Specification of Letters Patent.

Eatented Cet. 16, 1916.

Application filed November 2, 1915. Serial No. 59,253.

T 0 all 'whom it may concern:

Be it known that I, FREDERICK N. PURDUE, a citizen of the United States, and a resident of East Orange, in the county of Essex and State of New Jersey, have invented a new and improved Cutting Device, of which-the following' is a. full, clear, and exact description.

The invention relates to shoe machinery, and its object is to provide a new and improved cutting or trimming device, more especially designed for cutting a temporary cover of linen or other fabric material close to the sole of a shoe, boot or slipper and without danger of cutting or marring the upper or sole of the shoe, boot or slipper;

1n order to produce the desired result use is made of a knife having a cutting edge at one end and a sheath having a tapering open end through which extends the cutting edge of the knife, the said tapering end of the sheath protecting the surrounding parts of the shoe from being cut into by the said'cutting edge.

A practical embodiment o-f the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in 'all the views.

Figure 1 is a sectional side elevation of the cutting device as applied, the parts being shown in elevation; Fig. 2 is a front end elevation of the same; and Fig. 3 is a similar View of a modified form of the cutting device.

1n the manufacture of boots, shoes and slippers of colored leather or other material,

it is the practice to cover the article with a cover of linen, cotton or similar fabric material, the cover being lasted in with the up-V per and sewn in afterward with the welt. After the shoe or slipper is finished the cover is cutas close as possible to the welt, and this operation is at present generally accomplished by hand. By the use of the cutting devices presently to be described inV detail the expensive hand labor is dispensed with and the work is done more rapidly and with less danger of damage to the sole or upper of the shoe, boot or slipper.

The cutting device, as illustrated in Figs. 1 and 2, is mounted on a suitably constructed stand 10 provided at its upper end with a bearing 11 for a shaft 12 Carrying a pulley 13 connected by belt 14 with other machinery for imparting a rotary motion tothe shaft 12. The forward end of the shaft 12 is provided with an eccentric 15Y on which is'v mounted a hub 16 of a' sheath 17 through which extends a thin flat shaft 18 disposed at a right angle to the axis of thesliaft 12. A cutting edge 19 is formed on the lower end of the shaft 18 and this cutting edge 19 projects through the open tapering lower end 2O of the sheath 17. provided near its upper end with ane-adj ustable collar 21 adapted to rest on the top of the hub 16. A spring 22 is connected at one end with the upper end of the knife 18 and projecting into an annular groove 24 formed on the eccentric end 15 of the shaft 12 to The knife 18 isk Itis understood that hold the hub 16 against axial movement on y the eccentric 15. f

The sheath 17 immediately below the hub 16 extends into a guide 25 provided with` a pin 26 mounted to turn in the stand 10 to allow the guide 25 to oscillate in case an *oscillating motion is given to the hub 16.

The shoe, boot, slipper or similar footwear is provided with a cover 31 of linen, cotton or a similar fabric'material, and sewed in with the welt. This cover 31 is to be'cut by the cutting edge 19 of the knife 18 close to the sole 32 and for this purpose the edge of thesole 32 is adapted to be supported on an angular support 33 on the free end of an arm 34 pivoted at 35 on a link 36 fulcrumed at 37 on the stand 10. The spring 38 is interposed between the link 36 and the stand 10 to allow the link 36 to yield in a rearward direction. Y

In using the cutting device, the operator having hold of the work engagesl the edge ofthe sole 32 withthe supports 33 and moves the work along as the cutting progresses so that the entire cover 31 is trimmed or cutoff in close Vproximity to the welt.

As described, the rotation of the shaft 12 causes an oscillation of the sheathv 17 carrying theknife 18 whereby an oscillating motion is given to the knife 18 to cause' its edge A7505 sheath having, a tapering` end,ya knife '19 to cut-the cover 31. If desired, `the shaft 12 may be stopped or held-stationary and a vertical reciprocating movement may be given to theknife 18 by connecting the up per` end of the said knife by a pitman 41' Withsuitable machinery for imparting an up and dovvn sliding movement to the knife 18, If desired, aV rocking movement may be given to `thejsheath 17 vvhile the knife 18 is heldstationary therein, the shaft 12 5is at a standstilljand the guide 25 is removed. VFor this Vpurpose use may be made of a link 42 extending,horizontally and connecting the upperend of the knife 18 with a suitable device forimparting4 a rocking motion to the sheath` 17, the hub 16 of Which is mounted A toturn on an eccentricl. If desired,the i' knife 1S mayj'be fastened positively in place in the sheath 17'by the `u'seof a set screw 50 in case a rocking movement is given to the sheath inl either of the two `forms above nie'ntioned, but When a recijzirocating up and down Amovement is given to the yknife 1S by -thelink connectioneil.` then the set screw 50 retracted4 toV allow-such up and dovvn `movement of the knife. f Y' ,It isV expressly understoodthat I do not limit. myself` togthe particular, movement given to the knife, that is, Whether an up and, dovvnor oscillatingmovement is pro-v duced, it being, howvevenunderstood that in either case the movement givingto the cut- L, ting edge is veryfslight, say` about onesiXteenth of an inch. 4

. sheath 17 a guardis provided for protecting the 'upper andthe sole against being cut into `oir-otherwise injured by the cutting `edge `19of the knife 18 especially as the cut- 40` ting edge .191is in close proximity to the "tapering: endg, 2,0ofv the sheath 17 carrying fthe knife i 189.,

mounted in the hub ofthe sheath andhav* Iing its cuttingedge projectingfbeyond the tapering end `of `the sheath, and means for imparting movement `to theknife,

2. A cutting` device] for` cutting the pro- ,tectivel cover ofmshoes, boots; ,org slippers, comprisingfai shafthavinga-an eccentric, a

i sheath having a `hub mounted on,the, said Copies `otgthisjpglteiitmeygiloe.l `obtainedforirre cents each, by addressing the Commissioner of Patents,v

j shafteccentric, ,the-'said lsheath `standing at a right angle; tothe axis ofthe saidshaft andhaving a` tapering end, aknife, in the said sheath l and having a" cutting edge -pro- By providing the tapering end 2O of the jecting' beyond in immediate proximity to the said tapering end of the sheath, and means for rocking the said sheath.

A cutting device for cutting the protective coverl of shoes, boots or slippers, com- `cushioning the said knife relative to its sheath.

4. A cutting device for cutting the protective cover of shoes, boots and slippers, comprising a stand, a shaft journaled in the Said-stand and having an eccentric end, a

Vsheath having a hub and mounted on the said eccentric end, the sheath having a tapering end, a` knife in the said sheath and having a cutting endprojecting beyond the said tapering end, and an oscillating guide mounted onthe said sta-nd and engaging the said sheath. n v

5. A cuttingdevice for cutting the protective ,cover of shoes, boots and slippers, comprising a stand, a shaft journaled in the said stand and having lan eccentric end, a sheath having a huband mounted on the said eccentric end, the sheath having a taperingiend7 a knife in the said sheath and having a vcutting end projecting beyond ythe said tapering end, an oscillating guide mounted on the said stand and engaging the said sheath, a collar on the said knife and Vadapted to 'rest on tliesaid hub, `and aspring l connecting the said knife With the said sheath to hold the said knife collar seated on the said hub,`

. 6. A cutting device for. cutting the protective cover of shoes, boots, or slippers, comprising Van oscillating hub having a sheath projecting therefrom, a knife mounted in the hub and having its cutting edge projectingV beyond theend of the sheath, and means for oscillating saidy hub.

7. VA cutting device for cutting the cover of shoes, boots, or slippers, comprising an oscillating hub havingka sheath projecting therefrom, an adjustable spring pressed knife carried by the hub and having its lower cutting edge projecting through the sheathfand its upper end projecting above thel hub, and means for oscillating said hub.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses. j

FREDERICK N. PURDUE.

Witnesses:

THEO. G. Hos'rnn, j PHILIP D. RoLLHAUs.

Washington. D. C. 

